Drilling-tool.



110.834.167. PATENTBD 0071: 2a, 1906. A.G.SHUSTER.

DRILLING TOOL.

APPLICATION FILED JAN. 27. 1905. I

- rm/guys. If

T all. iuhom it may concern.-

UNITED STATES PATENT OFFICE,-

ANDY o sn'usrER, 10F ARROYO GRANDE, CALIFORNIA.

I DR lL LlNG-TOOF. I

Be it known that I, ANDY C. SHUSTER, av citizen of the United States,and a resident of Arroyo Grande, in the county of San Luis Obispo andState of California, have invented a new and: Improved Drilling-Tool, ofwhich the following is a full, clear, and exact description Theinvention relates to deep-well drilling; and its object is to' provide anew and improved drilling-tool arranged to permit convenient up of alost bit, to'prevent' injury to the drive-pipe shoe or pipeby the socketof the bit, and to allow the drillin to pass up' awayfromrthecuttingedge 0 the it to prevent clog ing of the same, and to lpermit it to be rea ily turned in the well;

The invention consists of novel features and arts and combinations ofthe same, as will be more fully described hereinafter and then pointedout in the claims.

1' A practical embodiment of the invention is represented in theaccompanying drawings,

forming a part of this s ecification, in which SIIIlllBI characters'ofre erence indicate corresponding parts in all the views.

the line 4 4 of Fig. 3.

the drill-rod, 3

Figure 1 is a side elevation of the improvement. Fig. 2 is an enlargedside elevation of arts beingin section. Fig.3 is an enlarge sideelevation of the bit, and Fig. 4 is a sectional plan view of, the sameonThedrilling-bit A is fastened on the lower end of a drill rod or stem B,carrying at its upper .end a head'O, to which is secured a lifting cableor. rope D, connected with suitable machinervfor alternately raising anddropping the ner.

4 The drilling-bit is provided with an elonandconnected ,at oppositesides of the bit by"v Hing-tool in the usual mangate d opening A,arrang'ed between its ends channels A with the lower or c'utting edge Aof the bit. Inclined guideways A lead to the up er end. of the opening Aso that when the bit is lost the well' and a suitable fishing-tool isemployed then: the hooks of the fishing-tool can readily engage theopening A., so that the tool can be drawnup the wellhole to the surface.

the bit, and by having. the-recesses 2 ar- Specification of LettersPatent.

- 3 Applioation filed January 27,1906; Serial No. 242.879.

' Patented Oct. 23, 1906.

ran ed as. described it is I dril 'ngs ass up away from the cutting edgewithout the well. ence by the arrangement deevident that the anger ofclogging the drilling-bit 1n scribed the drilling-bitcan be iea'dilyturned to prevent the latter from making a flat hole preferably in thesha e of an inverted frustu m of a cone. By having the swell B arrangedas described a it is evident that when usin the drilling-toolthe swellis not liable to str' e and injure the drive-pipe shoe oi the lower endof the pipe,

as the swell properly guides the lower portion of the. drilling-rod onthe drive-pipe shoe.

Having thus described .my invention, I claim as new and desire to secureby Letters Patent' 1. A well-drilling tool com rising a lifting cable, adrill-rod, and a soli bit removably held on "the-lowerend of thedrill-rod and 7 having an opening for engagement by a fishing-tool.

-2. 1A well-drilling tool comprising a lifting cable or rope, adrill-rod, a solid bit removheld on-the lower end of the drill-rod. I

abl

and having an opening therein, and grooves leadin to the opening fromthe cutting edge of the it.

3. ."A well-drilling tool rovided with a solid bit havin an elongateopening above the cutting e e, I

4. A wel -drilling tool rovided with a solid bit havin an elongateopenin above the cutting e ge, and grooves lea ing to the opening fromthe cutting ed e.

5. A well-drilling tool provided with a solid bit havin an elongatedopening above the' cutting e ge, and inclined on thebit and leadin to tthe'upper end thereo In testimony whereof l havesigned my name to thisspecificationin the presence of two subscribing witnesses.

C. SHUSTER.

Euideways formed e said opening at ANDY Witnesses:

Tnuo'rnr MUNGER,

ARTHUR W. HAWKINS.

